Seiko Cal. 3820 - 403

The Seiko 3820-403 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-18db01c32b88]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1971

Related Models

• Seiko 3870-483
• Seiko 6674-212
• Seiko 6399-636
• Seiko 0728-129
• Seiko 4451-305
• Seiko 7089-851
• Seiko 7132-333
• Seiko 0736-483
• Seiko 6680-136
• Seiko 0797-790
• Seiko 7063-967
• Seiko 6664-113